„Those who are happiest are those who do the most for others.“

„The happiest people I have known have been those who gave themselves no concern about their own souls, but did their uttermost to mitigate the miseries of others.“

—  Elizabeth Cady Stanton Suffragist and Women's Rights activist 1815 - 1902

Источник: History of Woman Suffrage, Volumes I-III

„The Happiest peoples, it is said, are those which have no history. Those who have a history, those who have made history seem only to have emphazied through their acomplishments the eternality of struggle. These disappear too eventually, just as those who made no effort, who were content to merely live & enjoy.“

—  Henry Miller American novelist 1891 - 1980

„In most cases, those who want power probably shouldn't have it, those who enjoy it probably do so for the wrong reasons, and those who want most to hold on to it don't understand that it's only temporary.“

—  John C. Maxwell American author, speaker and pastor 1947

Источник: Becoming a Person of Influence: How to Positively Impact the Lives of Others

„Just as the worst slave-owners were those who were kind to their slaves, and so prevented the horror of the system being realised by those who suffered from it, and understood by those who contemplated it, so, in the present state of things in England, the people who do most harm are the people who try to do most good.“

—  Oscar Wilde, книга The Soul of Man under Socialism

The Soul of Man Under Socialism (1891)

„The most mentally deranged people are certainly those who see in others indications of insanity they do not notice in themselves.“

—  Leo Tolstoy, книга The Devil

Источник: The Devil

„For Those Who Were There And Are Not.For Those Who Were There And Are For Him. But Most, For Her.“

—  James Clavell, книга King Rat

Dedication
King Rat (1962)

„The collectivity is divided into two classes of people: those who, by virtue of their ownership of the means of doing, command others to do, and those who, by virtue of the fact that they are deprived of access to the means of doing, do what the others tell them to do.“

—  John Holloway, книга Change the World Without Taking Power

Change the World Without Taking Power (2002)

„Those who are not looking for happiness are the most likely to find it, because those who are searching forget that the surest way to be happy is to seek happiness for others.“

—  Martin Luther King, Jr. American clergyman, activist, and leader in the American Civil Rights Movement 1929 - 1968

„For those who practise tyranny and deprive others of their rights, I will be harsh and stern, but for those who follow the law, I will be most soft and tender.“

—  Umar Second Caliph of Rashidun Caliphate and a companion of Muhammad 585 - 644

As quoted in Al Farooq, Umar (1944) by Muhammad Husayn Haykal, Ch. 5, p. 123

„Those who have least to do are generally the most busy people in the world.“

—  Samuel Richardson, книга The History of Sir Charles Grandison

Vol. 2, letter 3.
Sir Charles Grandison (1753–1754)

„Those who produce should have, but we know that those who produce the most — that is, those who work hardest, and at the most difficult and most menial tasks, have the least.“

—  Eugene V. Debs American labor and political leader 1855 - 1926

Walls and Bars (1927)

„The real value of free speech, in other words, is not to those who possess power, but to those who want to challenge them. And the real value of censorship is to those who do not wish their authority to be challenged.“

—  Kenan Malik English writer, lecturer and broadcaster 1960

Free speech in an age of identity politics (2015)
Контексте: To accept that certain things cannot be said is to accept that certain forms of power cannot be challenged.... This is why free speech is essential not simply to the practice of democracy, but to the aspirations of those groups who may have been failed by the formal democratic processes; to those whose voices may have been silenced by racism, for instance. The real value of free speech, in other words, is not to those who possess power, but to those who want to challenge them. And the real value of censorship is to those who do not wish their authority to be challenged. The right to ‘subject each others’ fundamental beliefs to criticism’ is the bedrock of an open, diverse society. Once we give up such a right in the name of ‘tolerance’ or ‘respect’, we constrain our ability to challenge those in power, and therefore to challenge injustice.

„There are three classes of people: those who see. Those who see when they are shown. Those who do not see.“

—  Leonardo Da Vinci Italian Renaissance polymath 1452 - 1519

„It is those who are successful, in other words, who are most likely to be given the kinds of special opportunities that lead to further success.“

—  Malcolm Gladwell journalist and science writer 1963

Источник: Outliers: The Story of Success

„Those who preach god, need god
Those who preach peace do not have peace
Those who preach love do not have love“

—  Charles Bukowski American writer 1920 - 1994

Источник: The Roominghouse Madrigals: Early Selected Poems, 1946-1966

„Learn some things from those who know; Watch some things from those who do; Learn other things by self experience.“

—  Sarvajna Kannada poet, pragmatist and philosopher

Tripadis

„Those who can -- do. Those who can't -- teach.“

—  H.L. Mencken American journalist and writer 1880 - 1956

„Those who hammer their guns into plows will plow for those who do not.“

—  Thomas Jefferson 3rd President of the United States of America 1743 - 1826

According to the Jefferson Library, this is misattributed to Jefferson http://wiki.monticello.org/mediawiki/index.php/Those_who_hammer_their_guns_into_plows.
Misattributed

„Those who say it can't be done are usually interrupted by others doing it.“

—  James Baldwin (1924-1987) writer from the United States 1924 - 1987